{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["cell line", "protein", "cell type", "DNA", "RNA"], "input": "Negative selection in the cortex appears to be a suicidal inversion of antigen responsiveness : instead of turning on IL-2 expression , the activated cell destroys its own chromatin ."}
{"cell line": [], "protein": ["IL-2"], "cell type": ["activated cell"], "DNA": ["chromatin"], "RNA": []}